She was loads of fun in "Iron Man 2" as Pepper Potts. Now comes the leaked single from her upcoming movie "Country Strong," where she plays a fallen country idol alongside Tim McGraw, Leighton Meester and Garrett Hedlund, and she sounds pretty great, somewhere between Carrie Underwood-sweet and Miranda Lambert-fiery. Watch out, Chris Martin, the missus may become another chart challenger. (H/T Vulture)